Function std::intrinsics::try

pub unsafe extern "rust-intrinsic" fn try(f: fn(*mut u8),                                          data: *mut u8,                                          local_ptr: *mut u8)                                          -> i32

Rust's "try catch" construct which invokes the function pointer f with the data pointer data.

The third pointer is a target-specific data pointer which is filled in with the specifics of the exception that occurred. For examples on Unix platforms this is a *mut *mut T which is filled in by the compiler and on MSVC it's *mut [usize; 2]. For more information see the compiler's source as well as std's catch implementation.